# Main Idea vs Train Mind

The clearest difference is price: Train Mind at Free against Main Idea's $6.99. Main Idea's advantage is in-app purchases (none vs 4) and iOS requirement (12.2 vs 15.6). On ads and device support there is nothing between them.

Train Mind is free to download; Main Idea costs $6.99 up front. Train Mind sells 4 in-app purchases, starting at $7.99 per month. Main Idea asks for nothing beyond the download.

## The numbers

| Metric | Main Idea | Train Mind |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/main-ideasentences/id895686005/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 84.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Paid | — |
| Size | 22 MB | 118 MB |
| Requires iOS | **12.2** | 15.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Janine Toole](https://appshunter.io/developer/839832427) | [Malik Atif Masood](https://appshunter.io/developer/1821006455) |

## What reviewers say

### Main Idea

[App page](https://appshunter.io/ios/app/main-ideasentences/id895686005)

This app helps children in grades 2-5 improve their reading comprehension by teaching them to identify the main idea of sentences. It uses a fun, game-like environment with step-by-step learning and a reward system to keep kids motivated.

**Highlights:** Step-by-step skill building, Incremental learning with unlocked levels, Frustration-free guided learning, Engaging reward center, Parental review and reporting, Over 600 examples, Timed levels for fluency

**Features:** macOS Compatibility

**In-app purchases:** none


### Train Mind

[App page](https://appshunter.io/ios/app/train-mind-brain-training/id6783008264)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $7.99 | per month |
| Yearly Plan | $19.99 | per year |
| Remove Ads Only | $2.99 | one-time |
| Unlock All Games Only | $3.99 | one-time |


## Frequently asked questions

### Is Main Idea free?

Main Idea costs $6.99, with no in-app purchases.

### Is Train Mind free?

Train Mind is free to download, with in-app purchases available.

### Do Main Idea or Train Mind have ads?

Neither Main Idea nor Train Mind shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*